CVE-2026-1088 is a Cross-Site Request Forgery (CSRF) vulnerability identified in the zero1zerouk Login Page Editor plugin for WordPress, affecting all versions up to and including 1.2. The vulnerability stems from the absence of nonce validation on the AJAX action devotion_loginform_process(), which is responsible for processing login page settings updates. Nonce tokens in WordPress serve as a security measure to verify that requests originate from legitimate users and not from malicious third-party sites. Without this validation, an attacker can craft a malicious web page or link that, when visited or clicked by an authenticated site administrator, triggers unauthorized changes to the plugin's login page configuration. This attack vector requires no authentication from the attacker but does require user interaction, specifically that an administrator is tricked into executing the malicious request. The vulnerability impacts the integrity of the plugin’s settings but does not directly compromise confidentiality or availability of the site. The CVSS v3.1 base score is 4.3 (medium), reflecting the limited scope and impact of the vulnerability. No known public exploits have been reported yet, but the risk remains significant due to the potential for stealthy unauthorized configuration changes. The plugin is widely used in WordPress environments, which are prevalent across many European organizations, especially those relying on WordPress for their web presence. The lack of a patch link suggests that a fix may not yet be available, emphasizing the need for interim mitigations.

For European organizations, this vulnerability poses a risk primarily to the integrity of their WordPress login page configurations. Unauthorized changes could lead to weakened security controls, altered user authentication flows, or the introduction of misleading login interfaces that could facilitate further attacks such as credential harvesting or phishing. While the vulnerability does not directly expose sensitive data or disrupt service availability, the indirect consequences could include increased risk of account compromise or reputational damage. Organizations with high reliance on WordPress for customer-facing or internal portals are particularly vulnerable. Given the widespread use of WordPress in Europe, especially in countries with large digital economies like Germany, the United Kingdom, France, and the Netherlands, the potential impact is significant. Attackers exploiting this vulnerability could target administrators via phishing campaigns to induce the required user interaction. The absence of known exploits in the wild currently limits immediate risk, but the vulnerability remains exploitable and should be addressed promptly to prevent future attacks.

To mitigate CVE-2026-1088, organizations should first verify if the zero1zerouk Login Page Editor plugin is installed and identify the version in use. If possible, update to a patched version once released by the vendor. In the absence of an official patch, administrators can implement manual nonce validation on the devotion_loginform_process() AJAX action by modifying the plugin code to include WordPress’s nonce verification functions (e.g., check_ajax_referer). Additionally, restricting access to AJAX actions to authenticated users only can reduce exposure. Employing Web Application Firewalls (WAFs) with rules to detect and block CSRF attempts targeting this plugin’s AJAX endpoint can provide interim protection. Administrators should be trained to recognize phishing attempts and avoid clicking suspicious links, especially when logged into WordPress admin panels. Regular backups of plugin settings and site configurations can help restore integrity if unauthorized changes occur. Monitoring logs for unusual AJAX requests or configuration changes can aid in early detection of exploitation attempts. Finally, consider limiting administrative access to trusted networks or VPNs to reduce the attack surface.